diff --git a/.github/workflows/flowzone.yml b/.github/workflows/flowzone.yml
index d426f3b..cbf2800 100644
--- a/.github/workflows/flowzone.yml
+++ b/.github/workflows/flowzone.yml
@@ -17,7 +17,7 @@ on:
 jobs:
   flowzone:
     name: Flowzone
-    uses: product-os/flowzone/.github/workflows/flowzone.yml@master
+    uses: product-os/flowzone/.github/workflows/flowzone.yml@3b69c8f20fbd2f43b5fcedb31373d7c45e86948e # master
     # prevent duplicate workflow executions for pull_request and pull_request_target
     if: |
       (